CN214036257U

CN214036257U - Volute component, fan component and air conditioner

Info

Publication number: CN214036257U
Application number: CN202023344048.4U
Authority: CN
Inventors: 张豪; 陈彬
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-24
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a volute component, a fan component and an air conditioner, wherein the volute component comprises a shell and a supporting piece, the shell is provided with an air outlet part, the supporting piece comprises a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate which are arranged around the outer side of the air outlet part, the first supporting plate and the second supporting plate are respectively connected with the two ends of the air outlet part in the length direction, the third supporting plate and the fourth supporting plate are respectively positioned at the two ends of the width direction of the air outlet part, two ends of the third supporting plate are respectively detachably connected with the first supporting plate and the second supporting plate, two ends of the fourth supporting plate are respectively and fixedly connected with the first supporting plate and the second supporting plate, therefore, the number of welding points of the volute component is reduced, the risk of corrosion failure caused by welding of the volute component is reduced, and the long-term stable work of the volute component is kept.

Description

Volute component, fan component and air conditioner

Technical Field

The utility model relates to an air conditioner technical field, in particular to spiral case subassembly, fan subassembly and air conditioner.

Background

When current metal spiral case installation, usually with left support plate and left frame riveting together, right support plate and right frame riveting together, will go up the backup pad welding again in the upper end of left support plate and right support plate, the bottom suspension fagging welds the lower extreme at left support plate and right support plate, fix with screw for the casing at last on a left side, on the right frame, however foretell last backup pad and bottom suspension fagging all adopt welded mode fixed connection between left support plate and right support plate, make the spiral case have more welding point, because stress and micro defect have been concentrated to the welding point, consequently the welding point appears rustting easily and leads to the phenomenon that the spiral case corrodes the inefficacy, influence the normal work of spiral case.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a few spiral case subassembly of welding point.

The utility model also provides a fan subassembly and have the air conditioner of above-mentioned fan subassembly that have above-mentioned spiral case subassembly.

According to the utility model discloses spiral case subassembly of first aspect embodiment, including casing and support piece, the casing has air-out portion, support piece is including enclosing to be located first backup pad, second backup pad, third backup pad and the fourth backup pad in the outside of air-out portion, first backup pad with the second backup pad connect respectively in the length direction's of air-out portion both ends, the third backup pad with the fourth backup pad is located respectively the width direction's of air-out portion both ends, wherein, the both ends of third backup pad can be dismantled respectively connect in first backup pad with the second backup pad, the both ends of fourth backup pad fixed connection respectively in first backup pad with the second backup pad.

According to the utility model discloses spiral case subassembly of first aspect embodiment has following beneficial effect at least: during the installation, can dismantle the both ends of third backup pad respectively and connect in first backup pad and second backup pad, the both ends of fourth backup pad are fixed connection respectively in first backup pad and second backup pad, thereby enclose to establish the support piece and install in the outside of the air-out portion of casing, because the both ends of third backup pad can dismantle respectively and connect in first backup pad and second backup pad, avoid adopting the welded mode to connect, thereby the quantity of the welding point of spiral case subassembly has been reduced, reduce the spiral case subassembly and lead to the risk of corrosion failure because of welding point quantity is too much, be favorable to keeping the long-term steady operation of spiral case subassembly.

According to some embodiments of the utility model, first backup pad is provided with first installation department, the second backup pad is provided with the second installation department, the both ends of third backup pad can be dismantled respectively connect in first installation department with the second installation department.

According to the utility model discloses a some embodiments, first installation department is provided with first snap ring, the second installation department is provided with the second snap ring, the both ends of third backup pad are provided with first fixture block and second fixture block respectively, first fixture block be used for pegging graft in first snap ring, the second fixture block be used for pegging graft in the second snap ring.

According to some embodiments of the utility model, the casing includes bounding wall, first frame and second frame, first frame with the second frame install respectively in the length direction's of bounding wall both ends.

According to the utility model discloses a some embodiments, first backup pad with the second backup pad is provided with first connecting block and second connecting block respectively, first connecting block laminating connect in the outer wall of first frame, second connecting block laminating connect in the outer wall of second frame.

According to the utility model discloses fan subassembly of second aspect embodiment, including motor, wind wheel and the utility model discloses the spiral case subassembly of first aspect embodiment, the wind wheel is located in the casing and install in the output shaft of motor.

According to the utility model discloses fan subassembly of second aspect embodiment has following beneficial effect at least: during this spiral case subassembly installation of fan subassembly, can dismantle the both ends of third backup pad respectively and connect in first backup pad and second backup pad, the both ends of fourth backup pad are fixed connection respectively in first backup pad and second backup pad, thereby enclose to establish the outside of installing in the air-out portion of casing with support piece, because the both ends of third backup pad can dismantle respectively and connect in first backup pad and second backup pad, avoid adopting welded mode to connect, thereby the quantity of the welding point of spiral case subassembly has been reduced, reduce the spiral case subassembly and lead to the risk of corrosion failure because of welding point quantity is too much, be favorable to keeping the long-term stable work of fan subassembly.

According to the utility model discloses a some embodiments, the output shaft is provided with the connecting hole, the wind wheel is provided with the mating holes, the wind wheel is worn to locate through the retaining member the connecting hole with the mating holes and lock in the output shaft.

According to some embodiments of the invention, the housing is provided with an auxiliary hole cooperating with the mating hole, the auxiliary hole running through the top wall of the housing.

According to some embodiments of the utility model, the casing still is provided with the obturating member, the obturating member demountable installation in the auxiliary hole.

According to the utility model discloses air conditioner of third aspect embodiment, include the utility model discloses fan subassembly of second aspect embodiment.

According to the utility model discloses the air conditioner of third aspect embodiment has following beneficial effect at least: when the fan subassembly of air conditioner was installed, can dismantle the both ends of third backup pad respectively and connect in first backup pad and second backup pad, the both ends of fourth backup pad are fixed connection in first backup pad and second backup pad respectively, thereby enclose to establish the outside of installing in the air-out portion of casing with support piece, because the both ends of third backup pad can dismantle respectively and connect in first backup pad and second backup pad, avoid adopting welded mode to connect, thereby the quantity of the welding point of spiral case subassembly has been reduced, reduce the spiral case subassembly and lead to the risk of corrosion failure because of welding point quantity is too much, be favorable to keeping the long-term stable work of air conditioner.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Figure 1 is a perspective view of a volute assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

figure 3 is a perspective view of another angle of the volute assembly of an embodiment of the present invention;

figure 4 is a side view of a volute assembly of an embodiment of the present invention;

figure 5 is a perspective view of yet another angle of the volute assembly of an embodiment of the present invention (omitting the shroud);

figure 6 is a side view of a first support plate of a volute assembly according to an embodiment of the present invention.

Reference numerals:

the air conditioner comprises a shell 100, a first frame 110, a connecting lug 111, a second frame 120, a coaming 130, an auxiliary hole 131, an air outlet part 140 and an air outlet 141;

the support member 200, the first support plate 210, the first snap ring 211, the first connecting block 212, the mounting hole 213, the second support plate 220, the second snap ring 221, the second connecting block 222, the third support plate 230, the first fixture 231, the second fixture 232, and the fourth support plate 240;

wind wheel 300, retaining member 310.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise clear and definite limitations, words such as setting, installing, connecting, assembling, matching, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention by combining the specific contents of the technical solutions.

Referring to fig. 1 to 3, a volute assembly according to an embodiment of the first aspect of the present invention includes a housing 100 and a support 200, and the housing 100 and the support 200 may be made of a metal material. One side of the housing 100 extends outward to form an air outlet portion 140, the air outlet portion 140 is provided with an air outlet 141, and the air outlet 141 is substantially rectangular. Specifically, the supporting member 200 includes a first supporting plate 210, a second supporting plate 220, a third supporting plate 230 and a fourth supporting plate 240 which are arranged around the outside of the air outlet portion 140, the first supporting plate 210 and the second supporting plate 220 are respectively connected to two ends of the air outlet portion 140 in the length direction, and the third supporting plate 230 and the fourth supporting plate 240 are respectively located at two ends of the air outlet portion 140 in the width direction. The first support plate 210 and the second support plate 220 are provided with mounting holes 213 for mounting and fixing the scroll casing assembly on other components, and the number of the mounting holes 213 can be specifically set according to actual needs. Specifically, the first support plate 210 and the second support plate 220 may be fixedly mounted at both ends of the air outlet portion 140 in the longitudinal direction by riveting or the like. Both ends of the third supporting plate 230 are detachably connected to the first supporting plate 210 and the second supporting plate 220, and both ends of the fourth supporting plate 240 are fixedly connected to the first supporting plate 210 and the second supporting plate 220, respectively, of course, both ends of the fourth supporting plate 240 may be detachably connected to the first supporting plate 210 and the second supporting plate 220, and both ends of the third supporting plate 230 are fixedly connected to the first supporting plate 210 and the second supporting plate 220, respectively. The detachable connection can be in a plug-in connection or a clamping connection or a bolt connection or other connection modes, and the fixed connection can be in a welding connection or a riveting connection or other connection modes.

Referring to fig. 5, during installation, two ends of the third supporting plate 230 are detachably connected to the first supporting plate 210 and the second supporting plate 220, and then two ends of the fourth supporting plate 240 are fixedly connected to the first supporting plate 210 and the second supporting plate 220, so as to enclose the supporting member 200 and install the supporting member at the outer side of the air outlet portion 140 of the casing 100, since two ends of the third supporting plate 230 are detachably connected to the first supporting plate 210 and the second supporting plate 220, the connection in a welding manner is avoided, thereby reducing the number of welding points of the volute component, reducing the risk of corrosion failure of the volute component due to excessive number of welding points, and facilitating the long-term stable operation of the volute component.

Specifically, first backup pad 210 is provided with first installation department, second backup pad 220 is provided with the second installation department, first installation department and second installation department are located the same one end of the width direction of air-out portion 140, for example first installation department and second installation department all are located the width direction's of air-out portion 140 upper end, or first installation department and second installation department all are located the width direction's of air-out portion 140 lower extreme, third backup pad 230 both ends can be dismantled respectively and connect in first installation department and second installation department, first installation department and second installation department can be grafting portion or joint portion or other structures that are used for demountable installation, third backup pad 230 both ends can be dismantled through modes such as grafting or joint or bolted connection and connect in first installation department and second installation department.

Referring to fig. 2 and 5, in some embodiments of the present invention, the first installation portion is provided with a first snap ring 211, the first snap ring 211 is formed on the outer wall of the first support plate 210, the second installation portion is provided with a second snap ring 221, the second snap ring 221 is formed on the outer wall of the second support plate 220, the two ends of the third support plate 230 are respectively provided with a first fixture block 231 and a second fixture block 232, the first fixture block 231 is inserted into the first snap ring 211, and the second fixture block 232 is inserted into the second snap ring 221. During the installation, only need insert first snap ring 211 and second snap ring 221 respectively with first fixture block 231 and second fixture block 232 at the both ends of third backup pad 230, can connect third backup pad 230 between first backup pad 210 and second backup pad 220 and realize prepositioning, need not support the location to third backup pad 230 through the location frock in addition, thereby the installation operation has been simplified, the efficiency of installation has been improved, and carry out prepositioning to third backup pad 230 through first snap ring 211 and second snap ring 221, be favorable to improving the precision of installation.

Specifically, the shape of first snap ring 211 and second snap ring 221 is the same basically, and the shape of first fixture block and second fixture block is also unanimous basically and respectively with first snap ring 211 and second snap ring 221 adaptation, thereby convenient processing preparation, the efficiency of production is improved, during the installation through pegging graft first fixture block 231 in first snap ring 211, and peg graft second fixture block 232 in second snap ring 221, thereby can connect third backup pad 230 between first backup pad 210 and second backup pad 220 fast. Specifically, the width of the third support plate 230 is generally wider, the sizes of the first snap ring 211 and the second snap ring 221 are generally smaller, the sizes of the first clamping block 231 and the second clamping block 232 are also smaller, at this time, the first clamping block 231 and the second clamping block 232 are formed by one part of the end portion of the third support plate 230, and a gap is formed between the other part of the end portion of the third support plate 230 and the first clamping block 231 and the second clamping block 232, so that the first clamping block 231 and the second clamping block 232 can be conveniently inserted into the first snap ring 211 and the second snap ring 221 respectively.

Referring to fig. 1, 3 and 4, in some embodiments of the present invention, the casing 100 includes a surrounding plate 130, a first frame 110 and a second frame 120, wherein the first frame 110 and the second frame 120 are respectively installed at both ends of the surrounding plate 130 in a length direction. Specifically, the side edges of the first frame 110 and the second frame 120 may be provided with connecting lugs 111, the connecting lugs 111 are provided with through holes, and the first frame 110 and the second frame 120 may pass through the through holes through screws to be fixedly connected to the enclosing plate 130. Since the shape of the casing 100 is generally complicated, the casing 100 is divided into a plurality of independent parts, namely the enclosing plate 130, the first frame 110 and the second frame 120, so that the enclosing plate 130, the first frame 110 and the second frame 120 can be manufactured separately when the casing 100 is manufactured, thereby improving the production efficiency of the casing 100.

Referring to fig. 3 and 5, when the volute assembly is assembled, the first support plate 210 is fixedly connected to the first frame 110, the second support plate 220 is fixedly connected to the second frame 120, then two ends of one of the third support plate 230 or the fourth support plate 240 are respectively inserted into the first snap ring 211 and the second snap ring 221, then two ends of the other of the third support plate 230 or the fourth support plate 240 are welded and fixed to the first support plate 210 and the second support plate 220, and the shroud plate 130 is connected to the first frame 110 and the second frame 120 by screws, so that the assembly of the volute assembly is completed.

Referring to fig. 2, 5 and 6, in some embodiments of the present invention, the first supporting plate 210 and the second supporting plate 220 are respectively provided with a first connecting block 212 and a second connecting block 222, the first connecting block 212 is attached to the outer wall of the first frame 110, and the second connecting block 222 is attached to the outer wall of the second frame 120. During the installation, because the first connecting block 212 laminating first frame 110 sets up, can be through riveted mode with first connecting block 212 and first frame 110 fixed connection to with first backup pad 210 fixed connection in first frame 110, the area of contact between first backup pad 210 and the first frame 110 is great this moment, makes first backup pad 210 can support first frame 110 effectively. Similarly, because the second connecting block 222 is attached to the second frame 120, the second connecting block 222 and the second frame 120 are conveniently and fixedly connected by riveting, the second supporting plate 220 is fixedly connected to the second frame 120, and the contact area between the second supporting plate 220 and the second frame 120 is large, so that the second supporting plate 220 can effectively support the second frame 120. Through setting up as above for the length direction's of casing 100 both ends are supported fixedly by the first connecting block 212 of first backup pad 210 and the second connecting block 222 of second backup pad 220 respectively, thereby prevent that casing 100 from rocking easily when receiving length direction's external force, are favorable to keeping the stable work of spiral case subassembly.

Referring to fig. 1, the fan assembly according to the embodiment of the second aspect of the present invention includes a motor (not shown in the figure), a wind wheel 300 and the volute assembly according to the embodiment of the first aspect of the present invention, wherein the wind wheel 300 is located in the housing 100 and is installed on the output shaft of the motor. The motor is used for driving the wind wheel 300 to rotate in the shell 100, so that the air flow is conveyed. Specifically, the motor may be installed outside the housing 100, for example, when two volute assemblies are combined, the motor is located between the two volute assemblies, the motor has two output shafts, the two output shafts respectively extend into the housings 100 of the two volute assemblies and are connected to the wind wheel 300, and when the motor works, the two output shafts respectively drive the wind wheel 300 of the two volute assemblies to rotate.

In some embodiments of the present invention, the output shaft is provided with a connecting hole (not shown in the figure), the wind wheel 300 is provided with a matching hole (not shown in the figure), the wind wheel 300 is locked to the output shaft by the locking member 310 passing through the connecting hole and the matching hole, and the locking member 310 may be a bolt or other fastening member. Because wind wheel 300 need be with wind wheel 300 centering setting when installing in the inside of casing 100, just can make wind wheel 300 rotate in casing 100 steadily, for this reason through set up the connecting hole at the output shaft and set up the mating holes at wind wheel 300, consequently, when installing wind wheel 300 in the output shaft of motor, make the mating holes aim at the connecting hole through removing wind wheel 300, wind wheel 300 just realizes centering setting this moment, then rethread retaining member 310 wears to locate mating holes and connecting hole thereby can lock wind wheel 300 on the output shaft, thereby make wind wheel 300 can be in casing 100 steady rotation.

Referring to fig. 1, 3 and 4, in the above embodiment, since the wind wheel 300 is located inside the housing 100, it is difficult to insert the locker 310 into the fitting and coupling holes. To this end, in some embodiments of the present application, the auxiliary hole 131 penetrates through the top wall of the enclosure 130 by providing the enclosure 130 of the housing 100 with the auxiliary hole 131 which is matched with the matching hole. When the wind wheel 300 is installed, the wind wheel 300 is moved to the position on the output shaft of the motor, the matching holes are aligned to the connecting holes, and the matching holes are also just positioned below the auxiliary holes 131, so that the auxiliary holes 131 can be stretched into from the outer side of the top wall of the enclosing plate 130 through tools such as a screwdriver, the locking piece 310 can be conveniently screwed, and the wind wheel 300 is locked on the output shaft of the motor, and the operation is very convenient.

The utility model discloses an in some embodiments, bounding wall 130 still is provided with the jam piece (not shown in the figure), jam piece demountable installation is in auxiliary hole 131, thereby when installing wind wheel 300, thereby can pull down the jam piece from auxiliary hole 131 and make things convenient for instruments such as screwdriver to stretch into auxiliary hole 131 and carry out the locking operation of wind wheel 300, the installation is accomplished the back, can fill in the auxiliary hole 131 with the jam piece again, thereby prevent spiral case subassembly during operation, the inside air of casing 100 exchanges and influences spiral case subassembly's normal work through auxiliary hole 131 with the outside air easily. The blocking member should have a certain elasticity so as to be easily inserted into the auxiliary hole 131 and to perform a good sealing function. Specifically, the plug may be made of a material such as sponge or rubber, which has good elasticity and sealing property.

The utility model discloses the air conditioner of third aspect embodiment, air conditioner can be seat loop wheel machine or tuber pipe machine or other types's air conditioner, and the air conditioner includes the utility model discloses the fan subassembly of second aspect embodiment, certainly the air conditioner can also include subassembly such as heat transfer component, and the wind wheel 300 of fan subassembly carries the air input heat transfer component to carry to indoor after the heat transfer again to realize indoor ambient temperature's regulation and control. Specifically, an air outlet portion 140 is formed by extending one side of the housing 100 outward, the air outlet portion 140 is provided with an air outlet 141, and the air outlet 141 is substantially rectangular. The supporting member 200 includes a first supporting plate 210, a second supporting plate 220, a third supporting plate 230 and a fourth supporting plate 240 surrounding the outside of the air-out portion 140, the first supporting plate 210 and the second supporting plate 220 are respectively connected to two ends of the length direction of the air-out portion 140, and the third supporting plate 230 and the fourth supporting plate 240 are respectively located at two ends of the width direction of the air-out portion 140. The first support plate 210 and the second support plate 220 are provided with mounting holes 213 for mounting and fixing the scroll casing assembly on other components, and the number of the mounting holes 213 can be specifically set according to actual needs. Specifically, the first support plate 210 and the second support plate 220 may be fixedly mounted at both ends of the air outlet portion 140 in the longitudinal direction by riveting or the like. Both ends of the third supporting plate 230 are detachably connected to the first supporting plate 210 and the second supporting plate 220, and both ends of the fourth supporting plate 240 are fixedly connected to the first supporting plate 210 and the second supporting plate 220, respectively, of course, both ends of the fourth supporting plate 240 may be detachably connected to the first supporting plate 210 and the second supporting plate 220, and both ends of the third supporting plate 230 are fixedly connected to the first supporting plate 210 and the second supporting plate 220, respectively. The detachable connection can be in a plug-in connection or a clamping connection or a bolt connection or other connection modes, and the fixed connection can be in a welding connection or a riveting connection or other connection modes.

Because the two ends of the third supporting plate 230 of the volute component of the air conditioner are detachably connected to the first supporting plate 210 and the second supporting plate 220 respectively, the connection in a welding mode is avoided, so that the number of welding points of the volute component is reduced, the risk of corrosion failure of the volute component due to excessive welding points is reduced, and the long-term stable work of the air conditioner is kept.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A volute assembly, comprising:

a housing having an air outlet portion;

the supporting piece comprises a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate which are arranged on the outer side of the air outlet part in a surrounding mode, the first supporting plate and the second supporting plate are respectively connected to the two ends of the air outlet part in the length direction, and the third supporting plate and the fourth supporting plate are respectively located at the two ends of the air outlet part in the width direction;

wherein, the both ends of third backup pad can dismantle respectively connect in first backup pad with the second backup pad, the both ends of fourth backup pad respectively fixed connection in first backup pad with the second backup pad.

2. The volute assembly of claim 1, wherein: first backup pad is provided with first installation department, the second backup pad is provided with the second installation department, the both ends of third backup pad can dismantle respectively connect in first installation department with the second installation department.

3. The volute assembly of claim 2, wherein: the first installation department is provided with first snap ring, the second installation department is provided with the second snap ring, the both ends of third backup pad are provided with first fixture block and second fixture block respectively, first fixture block be used for pegging graft in first snap ring, the second fixture block be used for pegging graft in the second snap ring.

4. The volute assembly of any of claims 1 to 3, wherein: the shell comprises a coaming, a first frame and a second frame, wherein the first frame and the second frame are respectively arranged at two ends of the coaming in the length direction.

5. The volute assembly of claim 4, wherein: the first supporting plate and the second supporting plate are respectively provided with a first connecting block and a second connecting block, the first connecting block is attached to the outer wall of the first frame, and the second connecting block is attached to the outer wall of the second frame.

6. Fan subassembly, its characterized in that includes:

the volute assembly of any of claims 1 to 5;

a motor;

and the wind wheel is positioned in the shell and is arranged on an output shaft of the motor.

7. The fan assembly of claim 6, wherein: the output shaft is provided with the connecting hole, the wind wheel is provided with the mating holes, the wind wheel passes through the retaining member and wears to locate the connecting hole with the mating holes and lock in the output shaft.

8. The fan assembly of claim 7, wherein: the shell is provided with an auxiliary hole matched with the matching hole, and the auxiliary hole penetrates through the top wall of the shell.

9. The fan assembly of claim 8, wherein: the casing still is provided with the shutoff piece, shutoff piece demountable installation in supplementary hole.

10. An air conditioner, characterized in that: comprising a fan assembly according to any of claims 6 to 9.